 The Scout was entered as a joint project between Skytrader and McDonnell Douglas Helicopter, and was selected as the winning design, receiving the designation UV-23.Revisions to the original Scout design included blown wings and new propellers and gearboxes to significantly reduce the aircraft's IR and noise signatures.The Skytrader 800 prototype was re-engined at this point, and flew with Turbomeca Astazou XIV turboprops.